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Empty FOREACH loop [message #75108]

Mon, 14 February 2011 15:47

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

I was quite surprised when the following raised an error for me:

IDL> foreach g, [] do help, g
% Variable is undefined: <UNDEFINED>.
% Execution halted at: $MAIN$

Does this seem like unexpected behavior? I was expecting the loop just
not to execute.

Of course, whatever the right answer is, it shouldn't do this (as it
does on my Mac):

IDL> foreach g, [] do help, g
% Temporary variables are still checked out - cleaning up...

Mike
--
www.michaelgalloy.com
Research Mathematician
Tech-X Corporation

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[Message index]

		Empty FOREACH loop By: Michael Galloy on Mon, 14 February 2011 15:47
		Re: Empty FOREACH loop By: Paul Van Delst[1] on Mon, 15 October 2012 07:59
		Re: Empty FOREACH loop By: David Fanning on Fri, 12 October 2012 15:57
		Re: Empty FOREACH loop By: Bill Nel on Fri, 12 October 2012 15:40

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